/*
 * MIT License
 *
 * Copyright (c) 2020 International Business Machines
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#include "HelibBgvNativeFunctionEvaluator.h"
using namespace std;

namespace helayers {
HelibBgvNativeFunctionEvaluator::HelibBgvNativeFunctionEvaluator(HeContext& he)
    : AbstractFunctionEvaluator(he)
{}

void HelibBgvNativeFunctionEvaluator::powerInPlace(AbstractCiphertext& absCtxt,
                                                   int p) const
{
  HelibBgvCiphertext& c = dynamic_cast<HelibBgvCiphertext&>(absCtxt);
  c.ctxt.power(p);
}

void HelibBgvNativeFunctionEvaluator::totalProduct(
    AbstractCiphertext& result,
    const vector<shared_ptr<AbstractCiphertext>>& absMultiplicands) const
{
  size_t size = absMultiplicands.size();
  std::vector<helib::Ctxt> heLibMultiplicands;
  heLibMultiplicands.reserve(size);
  for (size_t i = 0; i < size; i++) {
    HelibBgvCiphertext& bgvMultiplicands =
        dynamic_cast<HelibBgvCiphertext&>(*absMultiplicands[i]);
    heLibMultiplicands.push_back(bgvMultiplicands.ctxt);
  }
  HelibBgvCiphertext& resultBgv = dynamic_cast<HelibBgvCiphertext&>(result);
  helib::totalProduct(resultBgv.ctxt, heLibMultiplicands);
}

} // namespace helayers
